gcleaner | d99a96df8ae80f5de78dd165b9e595233f51e06df8e30bba5229e4b8d04a6a60

Analysis

max time kernel
21s
max time network
35s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
10-03-2023 11:26

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General

Target

3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe
Size

270KB
MD5

0e64802a39def8b062a90ac724456d44
SHA1

7745f11285f663d01c01bfb55e230f7a871e7f52
SHA256

3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5
SHA512

1d684bc2de3bae0b50e3fd15dd3824e40ae5ee22c6983378c76f06d248f77d2dc231eb04ce5f880db400ea7b54da4914491df2d4006f18b89fcfaa3b1b947906
SSDEEP

6144:l6GXXyJP2yz6cWUcoKBPnjoc8vO+Tn849:gqCJP2ylWn9jmLr

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

292 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1056 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1056 taskkill.exe

pid	process
292	cmd.exe

pid	process
1056	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1056	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.execmd.exe

description	pid	process	target process
PID 1296 wrote to memory of 292	1296	3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe	cmd.exe
PID 1296 wrote to memory of 292	1296	3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe	cmd.exe
PID 1296 wrote to memory of 292	1296	3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe	cmd.exe
PID 1296 wrote to memory of 292	1296	3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe	cmd.exe
PID 292 wrote to memory of 1056	292	cmd.exe	taskkill.exe
PID 292 wrote to memory of 1056	292	cmd.exe	taskkill.exe
PID 292 wrote to memory of 1056	292	cmd.exe	taskkill.exe
PID 292 wrote to memory of 1056	292	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe
"C:\Users\Admin\AppData\Local\Temp\3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:292
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "3aa97a5e2d24316daca7529266216886cf888b6643b77c1e6c51ea42600e61c5.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1056

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1296-55-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download
memory/1296-56-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1296-58-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download